2 repeated in 
In the main text we give the undoubtedly authentic version of AF (→FE→EE). In turn, the authenticity of the version of GE, although likely, is uncertain – it may result from a routine revision consisting in moving the slur to the side of the noteheads (in GE the stems point downwards). There are numerous examples of such changes in Chopin's pieces, cf., e.g. the Mazurka in G Minor, Op. 24 No. 1, b. 3 or the Nocturne in D
Major, Op. 27 No. 2, b. 76-77. Therefore, it is possible that the notation of [AG] was no different from AF.
See b. 31-32
Compare the passage in the sources»
category imprint: Differences between sources
issues: Placement of markings, Omitted correction of an analogous place
notation: Rhythm